高非线性石英基光子晶体光纤产生宽带可调中红外孤子的实验研究
Received:December 14, 2016  Revised:April 27, 2017  点此下载全文
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Author NameAffiliationE-mail
YANGJian-Ju 燕山大学 yangjianju521@163.com 
基金项目:国家自然科学基金项目(61405173,61405172,61307110)
中文摘要:光子晶体光纤作为光学非线性良好介质,对宽带可调中红外超短脉冲孤子的产生具有重要作用。然而,利用高非线性石英基光子晶体光纤产生宽带可调中红外超短脉冲孤子的报道较少。本文通过研究发现双包层结构能降低石英基光子晶体光纤损耗,并制备一种高非线性双包层结构石英基光子晶体光纤来进行实验研究。使用钛宝石飞秒激光器将实验室自制的石英基光子晶体光纤在反常色散区泵浦,研究不同的泵浦功率和泵浦波长对中红外超短脉冲孤子的影响,并分析了石英基高非线性光子晶体光纤中红外超短脉冲孤子产生的物理机理。本文结合实验发现在泵浦功率为827nm,功率从0.1W增加到0.42W时,中红外第一个孤子随功率增加从1933nm移动到2403nm,可调范围达到470nm,为石英基光子晶体光纤产生宽带可调超短脉冲源创造了很好的条件。
中文关键词:中红外  石英基光子晶体光纤  反常色散区  孤子
 
Experimental study of broadband tunable mid-infrared soliton generation in a highly nonlinear silica based photonic crystal fiber
Abstract:Photonic crystal fiber is a good nonlinear medium which plays a major role in generating broad band tunable mid-infrared ultra short pulse soliton. However, the report about highly nonlinear silica based photonic crystal fiber to generate broadband tunable mid infrared ultrashort pulse soliton is less.We found that the double cladding structure can reduce the loss of photonic crystal fiber, so a highly nonlinear silica based photonic crystal fiber with double cladding is prepared. Silica based photonic crystal fiber made in our lab is pumped by the femtosecond Ti: sapphire laser in the abnormal region .The effects of the different pump powers and pump wavelengths on mid-infrared ultra short pulse soliton are investigated. Physical mechanisms of the generation of ultra short infrared ultrashort pulses solitons in highly nonlinear silica based photonic crystal fibers are also analysed.In this paper, the first mid-infrared soliton moves from 1933nm to 2403nm and the adjustable range lasts for up to 470nm when the pump wavelength works at 827nm with the pump power increasing from 0.1W to 0.42W, which provides a good condition for the broadband tunable ultrashort pulse source in the silica based photonic crystal fiber.
keywords:Mid-infrared  Silica based photonic crystal fiber  Anomalous dispersion region  Soliton
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Copyright:《Journal of Infrared And Millimeter Waves》